M92
M92 is a globular cluster containing hundreds of thousands of stars, most of them very old. With an estimated age of 13.8 billion years, it is almost as old as the Universe. It is a very compact cluster, class IV on the Shapley-Sawyer scale.
General information
- Constellation
- Hercules
- Category
- Clusters and stars
- Date
- 9 August 2022
Capture
- Total time
- 2 h 36 min
- Subframes
- 15 × 360 s with CLS, bin 1; 4 × R, 4 × G and 3 × B, bin 2
- Gain / Offset
- 125 / 30
- Calibration
- 50 library dark frames, 50 flat frames and 50 dark-flat frames; without bias frames
Equipment
- Telescope
- TS102 f/5.6
- Camera
- ASI294MM at -10 ºC
- Filters
- CLS, L, R, G and B Astronomik, 36 mm
- Mount
- HEQ-5 Pro belt drive
- Guiding
- Guide scope 60 mm f/4 + ASI224MC with PHD2
- Filter wheel
- ZWO EFW 7pos
Processing and environment
- Processing
- Stacked and post-processed with PixInsight 1.8.9-3
- Acquisition
- NINA
- Location
- l'Ampolla, Tarragona
- Sky
- Bortle 4